meteR (version 1.2)

sad: METE species abundance distribution

Description

sad.mete returns the species abundance distribution predicted by METE ($\Phi(n)$)

Usage

sad(x)
"sad"(x)

Arguments

x

an object of class mete.

Value

An object of class meteDist. The object contains a list with the following elements.

data

The data used to construct the prediction

d

density funciton

p

cumulative density function

q

quantile funtion

r

random number generator

La

Vector of Lagrange multipliers

state.var

State variables used to constrain entropy maximization

type

Specifies the type of distribution is 'sad'

Details

See Examples.

References

Harte, J. 2011. Maximum entropy and ecology: a theory of abundance, distribution, and energetics. Oxford University Press.

See Also

metePhi

Examples

data(arth)
esf1 <- meteESF(spp=arth$spp,
                abund=arth$count,
                power=arth$mass^(.75),
                minE=min(arth$mass^(.75)))
sad1 <- sad(esf1)
sad1
sad1$r(20)
sad1$q(seq(0,1,length=10))